%0 Journal Article %A Schoenberg, I. J. %T Arithmetic problems concerning Cauchy's functional equation %J Compositio Mathematica %D 1964 %P 169-175 %V 16 %I Kraus Reprint %U http://archive.numdam.org/item/CM_1964__16__169_0/ %G en %F CM_1964__16__169_0